Theseus

IUrlHelper extensions to point at a controller method to generate links.

Example:

// Regular IUrlHelper:
string aboutUrl = Url.Action("About", "Home");
string buyUrl = Url.Action("Buy", "Products", new { id = 17, color = "red" });

// Theseus:
string aboutUrl = Url.To<HomeController>(y => y.About());
string buyUrl = Url.To<ProductsController>(y => y.Buy(17, "red"));

This library uses EpsilonEvaluator to evaluate the route parameters from the method arguments. Most expressions should be evaluated without compilation and compiled expressions are not cached.

Inspired by AspNet.Mvc.TypedRouting from Ivaylo Kenov.

Performance

Theseus is of course slower than generating the links the regular way.

If you want expression based routing with really good performance, take a look at https://github.com/mariusz96/uri-generation, it beats Theseus consistently, sometimes by as much as 200%. But the API is very different.

Generate links to method without parameters:

Method	Links per second	Note
Url.To<HomeController>(y => y.Index())	2085989	Theseus with cache
Url.To<HomeController>(y => y.Index())	591933	Theseus without cache
Url.Action<HomeController>(y => y.Index())	535429	from Panelak.TypedRouting
Url.Action("Index", "Home")	1105261	-

Generate links to method with scoped variable parameter:

Method	Links per second	Note
Url.To<HomeController>(y => y.List(page))	442179	Cache not applicable
Url.Action<HomeController>(y => y.List(page))	401513	from Panelak.TypedRouting
Url.Action("List", "Home", new { page })	976240	-

Generate links to method with property parameter:

Method	Links per second	Note
Url.To<HomeController>(y => y.List(this.CurrentPage))	404453	Without cache
Url.Action<HomeController>(y => y.List(this.CurrentPage))	8729	from Panelak.TypedRouting
Url.Action("List", "Home", new { page = this.CurrentPage })	982898	-

Thanks

• blockmath_2048 for the name suggestion.